Many people assume that if an activity is published or popular, it is a good one. This is often the case when teachers select science activities because they are fun or address a particular science topic, not because they provide a quality learning experience. There are many activities that are fun and fulfill the requirements of an effective science learning experience—good selection is a matter of knowing what to look for during the selection process. This article provides an easy-to-use evaluation form that can be customized for individual teacher's needs.